Track-controlled mechanism.



A. H. SWBETLAND. TRACK CONTROLLED MECHANISM. APPLICATION FILED 1310151913.

Patented Nov. 17, 1914.

UNITED STUYFES P1 ARTHUR. H. SWEETLAN'D. 01- LUNG ii A! STREET AND STATION IFLILJXUTO]? 1C CORPORATION OF CALIFORNIA.

\TENT O H GALE FOR N IA.

FIGE.

ASSIGNOR TO NATIONAL PANY 01*- 1,053 ANGELES. CALIFORNIA. A

TRACK IICNTBOLLED MECI ULNTSM.

Applicat on film bsn mim' 15.151155.

nmgw tir' mmlurth win iHlminiwl in HIP JEU w nets 12 and mounted on the framing 15, is a magnetically actuahle mechanism 20, preferably including a pair of pole blocks 21 and a rotatable vane or armatur 22 mounted on u vertical axis 23 in the opening between the two pole blocks, Mounting the one on n vertical axis entirely obviates all clients of gravitation tending to rotate the armature; the armature does not have to he so nicely balanced as it does when mounted. on a horizontal axis. In Fig. 2 l have shown the mechanical construction for the mounting and operation of the armature. The shaft 23 is mounted in suitable hearing plates 24, and a small spiral spring .25 tends to nor mallv hold the shaft and armature in the position shown in 1 and 2, there being slight tension on the spring 25 in this position. A small stop 26 prevents the armature 22 from moving too far in the direction opposite to that indicated by the arrow; so that the armature, composed of a piece of magnetic material, is; always in a position to be attracted in the direction indicated "when the pole blocks 21 are magnetized. The vane or armature may he a magnet of on form or merely a piece of magnetic inw terial. The shaft 23, by its rotation mu operate any desired form of switch, such as a switch 30 whose movable arm 31 is actu ated b a small cam 32 on the shaft 23. The pole blocks 21 have pole pieces 33 pivoted on studs 34 hanging below the pole bloclo; with their lower ends above the plane of the track plates or bars 11.

The magnets 12. whether permanent or electro-ma ets, are constantly energized, so that the po e pieces 16 normally have polarities as indicated. hen the movable ment of the mechanism ove" the tionary bars 11, there are two independent and separate circuits set up, one from each magnet 12 through the bars 11 through the pole pieces 31 and through the magnetically actuable mechanism 2i It will be seen that the mechanism will operate it there he only one magnet 12; but the provision of two magnets one on each of the mechanism 20 provides that the whole device shall he syi..metrical with relation to the mechanism 20 and therefore that it shall actuate with equal efliciency in either direction of movement. It is preferred that the movable element of the device more in the directions indicated by the arrows in Fig. l with reference to the bars 11; but it is not impossible that the movable elements have a movement in the horizontal plane at right angles to the direction indicated. It is only necessary that, during the movement of the movable element, it is brou ht over the bars in the relation shown in i 1. so that there may be a magnetic flow rom one or both magnets 12 through both the track conductors 11 to the mechanism 20. Considering now nannies "only one of the magnets 12, it will be seen that the magnetic flow passes in series through the two bars 11; that the absence of either of the here will crerite a gap equal to the distance between the magnet and the me hunism 20 and will therehy greatly dimin To the amount of men ctism supplied to the mechanism. 4 l nmlre the dimensions of the magnetic c suit so that the removal of one of the bars; ll. will cause a reduction of the respective magnetism in the mechanism 20 to about one-fourth or one-lifth of its value when both hers 11 are in place. The? is, reluctance of the magnetic circuit using only one of the bars 11 is perhaps four or five times the reluctuner: using both the bars. Considering the system including two magnets 12, it is seen to be necessary to so place and arrange the magnets that their line poles will come over one or the other of the 11; if the arrangement were otherwise, there would be a simple closed magnetic circuit through the magnets l2, their pole pieces and the burs 1') ll, without including the i'nechzinism :20 at all in the nuignctic circuit.

Vi'ith the arrangement as shown in the dra ings if the device passes over a rail or other object which may more or less simulate one of the bars 11, there will not be sutlicient magnetism supplied to the mechanism 20 to cause its 0 oration. lVhile it is likely that the movab e element of the device may pass over one such member which will siu'nllatc the action of one bar 11, it is hardly possible that it would siinultzuleously pass over two such members. it is very likely that the device will pass over a diagonal rail; rind such a diagonal rail may simulate the notion of one of the hers 11 but could never simulate the action of both the bars ii. If the rail placed at a sufficient angle with the track. or with the motion of the momllla' elenwut of the device, its action would he to muse closure of the maguelic circuit between n south pole of one magnet and. u north pole of the other magnet. This would tend to simply make a closed circuit between the two magnets and would not have any effect Whuteveuupon the mechanism I have described my device including the double magnet double track plate arrangement and including a mugneticallv operable mechanism pro ,rahly having i movable vane or needle. The esseutialsoi' my invention are answered hy the use, in combination, of any magnetically upcruhle niecha nism. Thu-s; as slim'vn in Fig. 3. I lnav use an inductive device 20" consisting preferhly of a core ill and :1 Winding The changes in magnetic flux in the core (prefernhly soft iron) cause induced currents in the \vinding fiil which cur rents nuiy he used for any desired purpose, 'lhe magnetic action of'the device (which action is the principal feature of my invention) remains the same as before described.

I'claimi 5 1. In combination, anlagnet and alongnetically actu'able mechanism spaced apart sojthatthe'magnet normalhi has no effect on'.'

the/mechanism, and means for conducting, magnetism from the magnet to the mecha; -n s'm-i-nclnd1ng a pair of n'iagnetic conductors; the conductors and .the magnet and mechanism being relatively movable andhorizontally and. the mechanism having similarly spaceclpole piec and pair of stationary-magnetic conductors on the truck spaced apart a distance corresponding tie ,the

distance between the poles of the magnet.

In con'ibina'tion. a magnet anda magnetically actuable mechanism spaced apart and movable together with reference to a track the magnet having its poles spaced 7 a -pair of parallel a magnet and magnetically actuable mechanism spaced apart from each-other and movable 40 over the bars, the i'nagnct having "pole pieces adapted to move one over each bar and the mechanism having pole pieces ar'anged in such relation to be one above each bar atthe same time the magnet pole ieces are above the bars. 5. In combination. a stationary pair of spaced magnetic conducting bars. a movable system including a pair of substantiallipar- -allel magnetswith'iike poles at the corresponding ends of the magnets. and a magnet icall actuableinechanism spaced between the magnets, t'wo pole pieces for the mechanism, the pole pieces and the poles of the magnets beingrespectively spaced. apart a 56 distance corresponding to the spacing of the magnetic conducting bars. the magnets and pole pieces and bars being so correlated that when like poles of the magnets and one pole piece of the mechanism are in proximity to 60 one of the bars the other like poles and the other pole piece are in proximity to the other bar. 6. In combination. a stationary pair of parallel horizontal spaced bars of magnetic conducting properties, a movable system in tical plane of each bar.

o0 track, themagnet having its poles spaced 7 eluding a pairof l'iorizontai magma:- extending transvcrsel above he liars and act: l apart longitmlinallj. of the bars. a pole pie e lc|ien lcni iron: each ear. ofv .ilCll magnet in the ertical planes of lln' bars. the magnets being: ar need with lilnjg-poli-s over one bar. a maggot: i(.':ill \'-actuablc mechanism between the two magnets, and pole pltf 'i'r. ilepent'lont f om illc mechanism mi e in llll' It-l- 7. In combination, a statio-nar pair of parallel horizontal spaced barscof magnetic COlltliKflilflfl properties. a movable system inrluding apair of horizontal magnets extending: transversely abovethe bars and .spaced apart longitudinally of the bars, a

pole'picce (lepemlent from each end of each magnet in the vertical planes of the bars, the magnets being arranged with like poles over one bar. a magncticallvactua'ble mechanism between the two magnets, including a pair of pole blocks, a rotatablearmaturebetween the pole blocks. and pole pieces dependent from the pole blocks one the vertical plane of each bar. p

v t 8. In combination. two separate vand dis- -tin' .-t sources of magnetism spaced apart from each other. a magneticallyactuable mechanism between the two sources. and a pair of spaced magnetic conductors, the said 96 sm rces and mechanism being movable r cla-. tive to the. conductors into and out of proximity thereto. V- 1 9. In combination, a pair:- of magnets spaced apart horizontally,'a' ma'gnetically 100 movable needle between the magnets, and a pair of. parallel horizontal spacedmagnctic conductors. the magnets and. needle being 1 movable relativeito the'condnctors into and out of proximity thereto.

10. In con'ibination, a magnetanda-mechanism capable of beingatfected by magnetism spaced apart so that the magnet normally has no effect on the mechanism, and means for conducting magnetism from the magnet tothe mechanism including a pair of magnetic conductors, the conductor and the magnet and mechanism being relatively movable and correlated so that when the.

parts are in proximityya magnetic circuit is jlls -horizontal l v and the. mechanism having similarly spaced pole pieces, and a pair of. stationa ry magnetic conductors-0n the track spaced apart a. distance corresponding to the distance between the poles oftth'e magnet.

12. In combination, a pair of spaced magnetic conductors, and a mechanism cotipcrating with said conductors,*'said mechanism and, conductors being movable with relation to each other, said mechanism includin a magnet with pole pieces spaced apart a distance corresponding to the spacing between said conductors and including also a magnetically actuable mechanism spaced from the magnet and having pole pieces spaced apart corresponding to the spacing between said conductors.

13. In combination, a pair of elongate magnetic conductor bars spaced apart transversely, and a mechanism coiiperatin with said conductor bars, said bars an said mechanism being movable relative to each other, said mechanism including a magnet extending in a direction transversely across the bars and having pole pieces spaced apart corresponding to the spacing between the bars and inc uding a ma etically actuable mechanism spaced from t e magnet in a direction longitudinal of the bars and having pole pieces spaced in a direction transverse of the bars a distance corresponding to the transverse spacing of the bars.

14. In combination, a pair of spaced magnetic conductors, and a mechanism cooperating with said conductors, 'said mechanism and conductors being movable with relation to each other, said mechanism including a pair of magneticall charged (poles of opposite polarity s aced apart a istance corresponding to t e transverse spacing of the magnetic conductors, and including also a magnetically actuable mechanism spaced from said poles and having pole pieces spaced apart corresponding to the spacing between said conductors.

15. In combination, a pair of elongate magnetic conductor bars spaced apart transversely, and a' mechanism cooperating with said conductor bars, said bars and mecha' nism being mcmble relatively llasadaefiher,

said mechanism includin a magnet extending transversely across t e bars, pole pieces for the magnet spaced apart a distance corresponding to the transverse spacing of the bars, and lncluding a magnetically actuable mechanism s aced from Said'magnet lon itudinally o the bars, said megnetically actuable mechanism including a pair of pole pieces spaced apart transversely of the bars a distance corresponding to the transverse spacing of the bars and a pivoted magnetic member arranged between the pole pieces and adapted to be attracted thereby.

16. In combination, a pair of elongate magnetic conductor bars spaced apart transversely, and a mechanism adapted to cooperate with said bars, said mechanism and said bars being movable relatively to each other, said mechanism including a air of ma ets extendin transversely of the bars an spaced apart roin each other longitudinally of the bars, pole pieces for each of the magnets, those of each ma et being spaced apart a distance correspon ing to the transverse spacing between the bars like poles of the magnets being arranged adjacent one bar, and a. magnetically actuable mechanism arranged between said magnets and including a pair of pole pieces spaced transversely apart a distance corresponding to the transverse spacing between the bars, and a pivoted ma gnetlc needle between the pole pieces and adapted to be attracted thereby.

In witness that I claim the foregoing I have hereunto subscribed my name this 4th day of December 1913.

ARTHUR H. SWEETLIAND.

Witnesses:

ORLANDO E. KELLUM, Luna T. BARKELEW. 

